The URL can be used to link to this page

Home My WebLink AboutAddendum 8 - BID - 9963 HVAC Equipment Replacement - Three (3) LocationsAddendum # 8 9963 HVAC Equipment Replacements – Three (3) Buildings ADDENDUM NO. 8 SPECIFICATIONS AND CONTRACT DOCUMENTS Description of BID 9963: HVAC Equipment Replacements - Three (3) Locations OPENING DATE: 3:00 PM (Our Clock) May 1, 2024 To all prospective bidders under the specifications and contract documents described above, the following changes/additions are hereby made and detailed in the following sections of this addendum: Approved alternate equipment at Senior Center – Trane ERV and Bosch Heat Pumps are acceptable. Exhibit 1 – Trane ERV specification Please contact Jake Rector, Senior Buyer, at (970) 221-6776 or jrector@fcgov.com with any questions regarding this addendum. RECEIPT OF THIS ADDENDUM MUST BE ACKNOWLEDGED BY A WRITTEN STATEMENT ENCLOSED WITH THE BID OR QUOTE STATING THAT THIS ADDENDUM HAS BEEN RECEIVED. Financial Services Purchasing Division 215 N. Mason St. 2nd Floor PO Box 580 Fort Collins, CO 80522 970.221.6775 970.221.6707 fcgov.com/purchasing Submittal Trane U.S. Inc. Prepared For: Sold To: Date:4/24/2024 Customer P.O. Number: Job Number: Customer Project Number: Job Name:Senior Center HVAC Retrofit - City of Fort Collins Trane is pleased to provide the enclosed submittal for your review and approval. Product Summary The attached information describes the equipment we propose to furnish for this project and is submitted for your approval. Qty Model Description 1 Horizon™ (OAD/N Rev6 - OADG/OANG) - Horizon™ - Outdoor Air Unit (Revision 6) EXHIBIT 1 Product Data -Horizon™ - Outdoor Air Unit (Revision 6) Size Qty Description Model Number D000 1 Horizon™ - Outdoor Air Unit (Revision 6)OADG000C3-000000000-J3ALJ3AJ3-00A20E01B- A01002000-AA0000400-00AK00000 Tag(s):ERV-3 Unit Voltage: 460-3-60 Curb Selection: Standard Knockdown Curb - Energy Recovery Wheel Cabinet Warranty: 1-Year Parts Only (manufacturer warranty) Airflow Configuration: Vertical Discharge/Vertical Return Supply Fan Motor Type: Direct Drive w/Shaft Grounding Ring w/VFD Exhaust Fan Motor Type: Direct Drive w/Shaft Grounding Ring w/VFD Fan Piezo Rings: Supply & Exhaust Fan Piezo Rings/Taps Filter Options: MERV-8,30% Energy Recovery: ERV-Composite Construction with Frost Protection w/ VFD Energy Recovery Wheel Size: ERC-5262C Damper Options: 100% OA 2-Position Damper Exhaust Dampers: Isolation Dampers Electrical Options: Non-Fused Disconnect "Circuit Breaker" Outdoor Air Monitoring: Airflow Probes Smoke Detector: Return Smoke Detector Installation: Outdoor Convenience Outlet: Convenience Outlet Supply Discharge Air Sensor (FLD) 2 inch Double Wall Construction Stainless Steel Drip Pan Blower HP - 5 Blower RPM - 1350 Supply Fan - ANPA 22 Exhaust RPM - 1640 Exhaust HP - 5 Exhaust Fan - ANPA 20 Unit Amps - FLA: 14 Amps Min Circuit Ampacity - MCA: 15.6 Amps Maximum Fuse Size - MFS: 20 Amps FLD = Furnished by Trane / Installed by Others Page 2 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Comments:Tag:ERV-3 Weight Operating: Note: lb* Weight does not include CURB weight. See CURB submittal for actual 3158 Unit Information Model:Horizon™ (OAD/N Rev6 - OADG/OANG) Unit Length:214 in Size:D000 Unit Width:95 in Quantity:1 Unit Height:68 in Supply Airflow:5,400 CFM Elevation:5,000 ft Outside Airflow:5,400 CFM Ambient Air DB:F Minimum Airflow:1,068 CFM Refrigerant Charge Circuit 1:lbs in H20in H20 Energy Recovery Wheel CFMAirflow: ERC-5262C DB: WB: 81.3 62.1 F F CFMAirflow: DB: WB: 75.0 62.0 F F CFM**Airflow: DB: WB: 95.0 63.0 F F CFM5,187Airflow: ERV PD:0.71 in H20 Ventilation Supply Outside ExhaustReturn CFMAirflow: DB: WB: 60.3 58.0 F F CFMAirflow: DB: WB: 70.0 70.0 F F CFM**Airflow: DB: WB: -5.0 -5.0 F F CFM5,187Airflow: Ventilation Supply Outside ExhaustReturn 5,400 5,717 ERV PD:0.71 in H20 PD:0.78 PD:0.78 DB: WB: 89.9 63.2 F F DB: WB: 49.4 44.0 F F 4,870 4,870 5,400 ESP:1.54 in H20 ESP:1.54 in H20 Summer Conditions Winter Conditions 5,717 ** TAB Outside airflow through OA Intake to this value Total Capacity:12.17 MBH Eff.685.0 % Total Capacity:343.48 MBH Eff.59.0% Sensible Capacity:63.84 MBH Eff.74.0%Sensible Capacity:89.10 MBH Eff:27.0% Latent Capacity:51.67 MBH Eff:70.0%Latent Capacity:254.38 MBH Eff:70.0% FLD = Furnished by Trane / Installed by Others Page 3 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Supply Pressure Drop Summary 1.50 in H2O 0.09 in H2O 0.78 in H2O External Static Pressure: Filter: ERV OA: Outdoor:0.12 in H2O Total Static Pressure:2.49 in H2O Supply Fan Conditions Fan Motor BHP:3.56 BHP Operating RPM:1350 RPM Minimum RPM:796 RPM Supply Fan ANPA 22 Exhaust Fan ANPA 20 Exhaust Fan Conditions Fan Motor BHP:2.86 BHP Operating RPM:1640 RPM Exhaust Pressure Drop Summary Return External Static Pressure:1.54 in H2O ERV Return Filter PD:0.2 in H2O ERV Wheel PD:0.71 in H2O Total Exhaust Static Pressure 2.45 in H2O FLD = Furnished by Trane / Installed by Others Page 4 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Notes •Unit Electrical amps include the greater of compressor or electrical heat amps. •Unit’s electrical as shown above are for single point power. Unit Electrical Data Unit Voltage-Ph-Hz:460-3-60 Min Circuit Ampacity - MCA:15.6 Amps Unit Amps - FLA:14.0 Amps Maximum Fuse Size - MFS:20 Amps Electrical Summary Component Fan Service Qty HP (ea.)FLA (ea.)RLA (ea.)LRA (ea.) ERV/HRV 1 0.17 0.44 Exhaust 1 5 6.3 Supply 1 5 6.3 Controls 1 1 FLD = Furnished by Trane / Installed by Others Page 5 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Drawing Accurate for OAD NC Qty: 1 Tag(s): ERV-3 FLD = Furnished by Trane / Installed by Others Page 6 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Drawing Accurate for OAD NC Qty: 1 Tag(s): ERV-3 FLD = Furnished by Trane / Installed by Others Page 7 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Drawing Accurate for OAD NC Qty: 1 Tag(s): ERV-3 FLD = Furnished by Trane / Installed by Others Page 8 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Drawing Accurate for OAD NC and OAD INC Qty: 1 Tag(s): ERV-3 FLD = Furnished by Trane / Installed by Others Page 9 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins FLD = Furnished by Trane / Installed by Others Page 10 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins Mechanical Specifications - ERV-3Tag(s): Casing Unit casing shall be constructed of zinc coated, heavy gauge, galvanized steel. Exterior surfaces shall be cleaned, phosphatized, and finished with a weather-resistant baked enamel finish. Unit's surface shall be tested 672 hours in a salt spray test in compliance with ASTM B117. Unit shall have 2 inch thick Antimicrobial two component rigid polyurethane foam insulation, metal encapsulated with no exposed edges. Initial R value of 6.7 per inch of thickness. The unit's base pan shall have no penetrations within the perimeter of the curb other than the raised downflow supply/return openings to provide an added water integrity precaution, if the condensate drain backs up. Unit Top The top cover shall be one piece construction or, where seams exist, it shall be double-hemmed and gasket-sealed. The ribbed top adds extra strength and enhances water removal from unit top Sensors A factory installed combination outdoor air sensor located in the outdoor air hood is designed to sense both outdoor air temperature and relative humidity for use by the microprocessor controller to make required ventilation, cooling, dehumidification and heating decisions. Refer to the Sequence of Operations section of the Installation, Operation and Maintenance manual for detailed unit control and operational modes. A factory installed sensing tube is designed to sense the supply air temperature downstream of the indoor fan section. Heat Capacity - Primary: 150 MBH, (10:1 Turndown NG, 8:1 Turndown LP) Primary heat is supplied using indirect fired gas heating. The heating section shall have a progressive tubular heat exchanger design using Stainless Steel burners and type 439 Stainless Steel tubes. An induced draft combustion blower shall be used to pull the combustion products through the firing tubes. The heater shall use a direct spark ignition (DS) system. On initial call for heat, the combustion blower shall purge the heat exchanger for 20 seconds before ignition. After three unsuccessful ignition attempts, the entire heating system shall be locked out until manually reset at the thermostat/zone sensor. Units shall be comply with the California requirement for low NOx emissions. Unit shall be suitable for use with Natural Gas. Minimum incoming gas pressure of 7" W.C. and Maximum pressure of 14" W.C. required. Factory provided 25 year heat exchanger warranty. Fan Piezo Rings: Supply & Exhaust Fan Piezo Rings/Taps Air flow measurement will be accomplished through the use of Piezo Ring/Tap technology installed in the supply and Exhaust fan wheel area. Filter Options: MERV-8,30% Aluminum Mesh Filters (D, K and N Cabinets) and Galvanized Mesh Bird Screen (B and G Cabinets) shall be installed on the intake of the unit. In addition, one row of 2 inch MERV-8 rated filters (30 percent) shall be installed prior to the evaporator coil. Unit shall be equipped with a 6” filter rack upstream of the evaporator. Frame shall be field-adjustable to match any filter combination specified in the attached selection. Energy Recovery: ERV-Composite Construction with Frost Protection w/ VFD Energy recovery wheel performance shall be AHRI 1060 certified and bear the AHRI certified label. The rotating wheel heat exchanger is composed of a rotating cylinder in an insulated cassette frame complete with removable energy transfer media, seals, drive motor and drive belt. Energy transfer media shall be constructed of a durable synthetic lightweight polymer. The total energy recovery wheel is coated with a desiccant tat shall be either Type-A silica gel or 3A molecular sieve and permanently bonded to the energy transfer media without the use of binders or adhesives. The lightweight polymer substrate will not degrade nor require additional coatings for application in marine or coastal environments. Coated segments are cleanable outside of the cabinet with detergent or alkaline coil cleaner and water. Desiccant will not dissolve nor deliquesce in the presence of water or high humidity. Damper Options: 100% OA 2-Position Damper The unit shall have a factory installed and integrated 100% outdoor air hood with damper controlled a by direct coupled actuator and 2 inch permanent and washable aluminum mesh filters accessible through a hinged access panel. The return air damper tray is blocked off to allow 100% outdoor airflow. Electrical Options: Non-Fused Disconnect "Circuit Breaker" FLD = Furnished by Trane / Installed by Others Page 11 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins A 3-pole, molded case, HACR circuit breaker with provisions for through the base electrical connections shall be factory installed. Wiring will be provided from the circuit breaker to the unit high voltage terminal block. The switch will be UL/CSA agency recognized. The circuit breaker will be sized per NEC and UL guidelines. Factory wired Voltage/Phase monitor shall be included as standard. In the event of any of the following, the units will be shut down and upon correction of the fault condition the unit will reset and restart automatically. 1. Phase Unbalance Protection: Factory set 2% 2. Over/Under/Brown Out Voltage Protection: +/-10% of nameplate voltage 3. Phase Loss/Reversal Outdoor Air Monitoring: Airflow Probes The Greentrol GF-2100-A and GF-2200-A are high quality economical programmable dual-output airflow/temperature measurement and control instruments with options for analog air flow, temperature,and alarm. It is designed for installation in specified critical applications that require precise measurement of air flow (down to zero flow). The instrument includes factory calibrated probes and an advanced microprocessor controlled transmitter/controller. Each sensor probe is equipped with a high reliability bead-in-glass heated thermistor element, factory calibrated to NIST traceable standards from zero flow to 2,000 FPM. The transmitter is fully independent of the probe and does not require field matching to the probe. An advanced microprocessor processes the raw probe signals and provides versatile programmable airflow measurement and alarm options with direct LED drive or N.O./N.C. relay dry contacts, and selectable analog output signal options. A powerful variable input signal integration option can be engaged to reduce the effects of transient input signal variations, and an innovative Field Calibration Wizard allows for simple, automated field adjustment of the instrument if required. A 16 character LCD display indicates airflow, temperature, system status and is also used for configuration and diagnostics. Field configuration is accomplished using a simple four-button user interface. Smoke Detector: Return Smoke Detector Smoke detector shall be factory installed photoelectric smoke detector mounted in the return air section. The detector will be wired for continuous power whenever the unit is energized. Upon detection of smoke, the detector will shut down all unit operations. Local codes may dictate the location of detectors. Convenience Outlet: Convenience Outlet A powered 120 volt, 15 amp, 2 plug convenience outlet shall be factory installed. A service receptacle disconnect shall be installed. The convenience outlet is powered from the line side of the disconnect or circuit breaker, and therefore will not be affected by the position of the disconnect or circuit breaker. FLD = Furnished by Trane / Installed by Others Page 12 of 12Trane Equipment Submittal April 24, 2024Senior Center HVAC Retrofit - City of Fort Collins